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"Musical perception"
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An Interlanguage Unification of Musical Timbre
The current study expands our previous work on interlanguage musical timbre semantics by examining the relationship between semantics and perception of timbre. Following Zacharakis, Pastiadis, and Reiss (2014), a pairwise dissimilarity listening test involving participants from two separate linguistic groups (Greek and English) was conducted. Subsequent multidimensional scaling analysis produced a 3D perceptual timbre space for each language. The comparison between perceptual spaces suggested that timbre perception is unaffected by native language. Additionally, comparisons between semantic and perceptual spaces revealed substantial similarities which suggest that verbal descriptions can convey a considerable amount of perceptual information. The previously determined semantic labels “auditory texture” and “luminance” featured the highest associations with perceptual dimensions for both languages. “Auditory mass” failed to show any strong correlations. Acoustic analysis identified energy distribution of harmonic partials, spectral detail, temporal/spectrotemporal characteristics and the fundamental frequency as the most salient acoustic correlates of perceptual dimensions.
Journal Article
From perception to pleasure: Music and its neural substrates
Music has existed in human societies since prehistory, perhaps because it allows expression and regulation of emotion and evokes pleasure. In this review, we present findings from cognitive neuroscience that bear on the question of how we get from perception of sound patterns to pleasurable responses. First, we identify some of the auditory cortical circuits that are responsible for encoding and storing tonal patterns and discuss evidence that cortical loops between auditory and frontal cortices are important for maintaining musical information in working memory and for the recognition of structural regularities in musical patterns, which then lead to expectancies. Second, we review evidence concerning the mesolimbic striatal system and its involvement in reward, motivation, and pleasure in other domains. Recent data indicate that this dopaminergic system mediates pleasure associated with music; specifically, reward value for music can be coded by activity levels in the nucleus accumbens, whose functional connectivity with auditory and frontal areas increases as a function of increasing musical reward. We propose that pleasure in music arises from interactions between cortical loops that enable predictions and expectancies to emerge from sound patterns and subcortical systems responsible for reward and valuation.
Journal Article
Superior time perception for lower musical pitch explains why bass-ranged instruments lay down musical rhythms
The auditory environment typically contains several sound sources that overlap in time, and the auditory system parses the complex sound wave into streams or voices that represent the various sound sources. Music is also often polyphonic. Interestingly, the main melody (spectral/pitch information) is most often carried by the highest-pitched voice, and the rhythm (temporal foundation) is most often laid down by the lowest-pitched voice. Previous work using electroencephalography (EEG) demonstrated that the auditory cortex encodes pitch more robustly in the higher of two simultaneous tones or melodies, and modeling work indicated that this high-voice superiority for pitch originates in the sensory periphery. Here, we investigated the neural basis of carrying rhythmic timing information in lower-pitched voices. We presented simultaneous high-pitched and low-pitched tones in an isochronous stream and occasionally presented either the higher or the lower tone 50 ms earlier than expected, while leaving the other tone at the expected time. EEG recordings revealed that mismatch negativity responses were larger for timing deviants of the lower tones, indicating better timing encoding for lower-pitched compared with higher-pitch tones at the level of auditory cortex. A behavioral motor task revealed that tapping synchronization was more influenced by the lower-pitched stream. Results from a biologically plausible model of the auditory periphery suggest that nonlinear cochlear dynamics contribute to the observed effect. The low-voice superiority effect for encoding timing explains the widespread musical practice of carrying rhythm in bass-ranged instruments and complements previously established high-voice superiority effects for pitch and melody.
Journal Article
Musical illusions and phantom words : how music and speech unlock mysteries of the brain
In this ground-breaking synthesis of art and science, Diana Deutsch, one of the world's leading experts on the psychology of music, shows how illusions of music and speech-many of which she herself discovered-have fundamentally altered thinking about the brain. These astonishing illusions show that people can differ strikingly in how they hear musical patterns-differences that reflect variations in brain organization as well as influences of language on music perception. Drawing on a wide variety of fields, including psychology, music theory, linguistics, and neuroscience, Deutsch examines questions such as: When an orchestra performs a symphony, what is the \"real\" music? Is it in the mind of the composer, or the conductor, or different members of the0audience? Deutsch also explores extremes of musical ability, and other surprising responses to music and speech. Why is perfect pitch so rare? Why do some people hallucinate music or speech? Why do we hear phantom words and phrases? Why are we subject to stuck tunes, or \"earworms\"? Why do we hear a spoken phrase as sung just because it is presented repeatedly? In evaluating these questions, she also shows how music and speech are intertwined, and argues that they stem from an early form of communication that had elements of both. Many of the illusions described in the book are so striking and paradoxical that you need to hear them to believe them. The book enables you to listen to the sounds that are described while reading about them.
Book
The basis of musical consonance as revealed by congenital amusia
Some combinations of musical notes sound pleasing and are termed \"consonant\" but others sound unpleasant and are termed \"dissonant.\" The distinction between consonance and dissonance plays a central role in Western music, and its origins have posed one of the oldest and most debated problems in perception. In modern times, dissonance has been widely believed to be the product of \"beating\": interference between frequency components in the cochlea that has been believed to be more pronounced in dissonant than consonant sounds. However, harmonic frequency relations, a higher-order sound attribute closely related to pitch perception, has also been proposed to account for consonance. To tease apart theories of musical consonance, we tested sound preferences in individuals with congenital amusia, a neurogenetic disorder characterized by abnormal pitch perception. We assessed amusics' preferences for musical chords as well as for the isolated acoustic properties of beating and harmonicity. In contrast to control subjects, amusic listeners showed no preference for consonance, rating the pleasantness of consonant chords no higher than that of dissonant chords. Amusics also failed to exhibit the normally observed preference for harmonic over inharmonic tones, nor could they discriminate such tones from each other. Despite these abnormalities, amusics exhibited normal preferences and discrimination for stimuli with and without beating. This dissociation indicates that contrary to classic theories, beating is unlikely to underlie consonance. Our results instead suggest the need to integrate harmonicrty as a foundation of music preferences, and illustrate how amusia may be used to investigate normal auditory function.
Journal Article
Comparing notes : how we make sense of music
Comparing Notes explores what music is, why all of us are musical, and how abstract patterns of sound that might not appear to mean anything can, in fact, be meaningful. From pitch and rhythm to dynamics and timbre, the author shows how all the elements of music cohere through the principle of imitation to create an abstract narrative in sound that we instinctively grasp, whether listening to Bach or the Beatles.
Book
Processing of hierarchical syntactic structure in music
Hierarchical structure with nested nonlocal dependencies is a key feature of human language and can be identified theoretically in most pieces of tonal music. However, previous studies have argued against the perception of such structures in music. Here, we show processing of nonlocal dependencies in music. We presented chorales by J. S. Bach and modified versions in which the hierarchical structure was rendered irregular whereas the local structure was kept intact. Brain electric responses differed between regular and irregular hierarchical structures, in both musicians and nonmusicians. This finding indicates that, when listening to music, humans apply cognitive processes that are capable of dealing with long-distance dependencies resulting from hierarchically organized syntactic structures. Our results reveal that a brain mechanism fundamental for syntactic processing is engaged during the perception of music, indicating that processing of hierarchical structure with nested nonlocal dependencies is not just a key component of human language, but a multidomain capacity of human cognition.
Journal Article